— I can’t get through to the general manager’s office.—The line is busy. Someone ________ the telephone.
#76155
A
must have used
B
could use
C
could have used
D
must be using
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—Could you please have a walk with me?—Sorry, I _______. I have something important to do now.
#74182
A
mustn’t
B
needn’t
C
can’t
D
may not
You drink wine before driving, or the police will take your license away.
#77356
A
don’t have to
B
needn’t
C
mustn’t
D
may not
— Do you know whose magazine is it?— I think it be Lily’s, for we can find her name on the cover.
#75615
A
can
B
might
C
could
D
must
----Dad, the bread is not enough. I am still hungry. I have something more? ----But there’s nothing in the fridge now.
#77606
A
Must
B
Need
C
Will
D
Can
I use a clock to wake me up because at six o'clock each morning the train comes by my house.
#63505
A
couldn't
B
mustn't
C
shouldn't
D
needn't